For citations:

Koshanova M.D., Muratbekova M.A., Turmetov B.H. ON SOME SPECTRAL PROBLEMS FOR THE NONLOCAL ANALOGUE OF THE BIHARMONIC OPERATOR. Herald of the Kazakh-British Technical University. 2025;22(2):155-164. (In Kazakh) https://doi.org/10.55452/1998-6688-2025-22-2-155-164